JPS6254608B2 - - Google Patents
Info
- Publication number
- JPS6254608B2 JPS6254608B2 JP20312282A JP20312282A JPS6254608B2 JP S6254608 B2 JPS6254608 B2 JP S6254608B2 JP 20312282 A JP20312282 A JP 20312282A JP 20312282 A JP20312282 A JP 20312282A JP S6254608 B2 JPS6254608 B2 JP S6254608B2
- Authority
- JP
- Japan
- Prior art keywords
- machining
- machining fluid
- workpiece
- wire
- fluid
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
- 238000003754 machining Methods 0.000 claims description 100
- 239000012530 fluid Substances 0.000 claims description 63
- 238000001816 cooling Methods 0.000 claims description 13
- 238000000034 method Methods 0.000 claims description 7
- 238000009760 electrical discharge machining Methods 0.000 claims description 6
- 238000009763 wire-cut EDM Methods 0.000 claims description 5
- 238000001914 filtration Methods 0.000 description 8
- 239000007788 liquid Substances 0.000 description 5
- 239000002699 waste material Substances 0.000 description 4
- 229910003460 diamond Inorganic materials 0.000 description 3
- 239000010432 diamond Substances 0.000 description 3
- 239000012809 cooling fluid Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000010419 fine particle Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000003672 processing method Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23H—WORKING OF METAL BY THE ACTION OF A HIGH CONCENTRATION OF ELECTRIC CURRENT ON A WORKPIECE USING AN ELECTRODE WHICH TAKES THE PLACE OF A TOOL; SUCH WORKING COMBINED WITH OTHER FORMS OF WORKING OF METAL
- B23H7/00—Processes or apparatus applicable to both electrical discharge machining and electrochemical machining
- B23H7/02—Wire-cutting
- B23H7/08—Wire electrodes
- B23H7/10—Supporting, winding or electrical connection of wire-electrode
- B23H7/101—Supply of working media
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Electrical Discharge Machining, Electrochemical Machining, And Combined Machining (AREA)
Description
【発明の詳細な説明】
産業上の利用分野
本発明はワイヤカツト放電加工方法、特にワイ
ヤ電極と被加工物との間に形成される間隙に加工
液を供給しながら該間隙で放電を発生させて被加
工物の加工を行うワイヤカツト放電加工方法に関
する。DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a wire cut electrical discharge machining method, and particularly to a wire cut electrical discharge machining method, in which a machining fluid is supplied to a gap formed between a wire electrode and a workpiece, and an electrical discharge is generated in the gap. The present invention relates to a wire cut electrical discharge machining method for machining a workpiece.
従来技術
ワイヤカツト放電加工は、細いワイヤ（通常直
径0.05mm〜0.25mm）を電極として、このワイヤに
テンシヨン（引張力）を掛けた状態で、ワイヤを
送給させながら被加工物と電極であるワイヤとの
間で放電を発生させ、この放電エネルギにより被
加工物の加工を行うものであり、この加工方法に
よれば、被加工物を所望の形状に高精度で切断
し、あるいは所望の抜型を高精度で形成すること
ができる。Conventional technology Wire cut electrical discharge machining uses a thin wire (usually 0.05 mm to 0.25 mm in diameter) as an electrode, and while tension is applied to this wire, the wire is fed between the workpiece and the wire that is the electrode. Electric discharge is generated between the two, and the workpiece is machined using this discharge energy. According to this processing method, the workpiece can be cut into a desired shape with high precision, or a desired cutting die can be cut. Can be formed with high precision.
従来、ワイヤカツト放電加工機として第１図で
示される加工機が使用されていた。 Conventionally, a processing machine shown in FIG. 1 has been used as a wire cut electrical discharge machine.
第１図において、XYテーブル１０は周知の被
加工物載置用テーブルであり、直交２辺に螺合さ
れた送りねじ棒１２ａ，１２ｂを駆動モータ１４
ａ，１４ｂで選択的に駆動することによりＸ軸方
向及びＹ軸方向に移動可能に構成されている。上
記XYテーブル１０に載置する被加工物１６に
は、予めドリル加工などによつてワイヤ電極を通
すための初孔１６ａが形成されている。 In FIG. 1, an XY table 10 is a well-known table for placing a workpiece, and a drive motor 14 drives feed screw rods 12a and 12b screwed together on two orthogonal sides.
It is configured to be movable in the X-axis direction and the Y-axis direction by selectively driving with a and 14b. In the workpiece 16 placed on the XY table 10, an initial hole 16a through which a wire electrode is passed is formed in advance by drilling or the like.
そして、送り出しリール（図示せず）から送り
出されたワイヤ電極１８は、ローラ（図示せず）
及び上部ワイヤガイド２０を経て初孔１６ａに貫
通された後、下部ワイヤガイド２２及びローラ２
４を経て巻取リール２６に巻取られる。更に、加
工用電源（図示せず）から給電板２８を介してワ
イヤ電極１８に給電が行われ、被加工物１６とワ
イヤ電極１８との間に所望の加工電圧が印加され
る。 Then, the wire electrode 18 sent out from the sending reel (not shown) is transferred to a roller (not shown).
After passing through the initial hole 16a through the upper wire guide 20, the lower wire guide 22 and the roller 2
4 and then wound onto a take-up reel 26. Furthermore, power is supplied to the wire electrode 18 from a processing power source (not shown) via the power supply plate 28, and a desired processing voltage is applied between the workpiece 16 and the wire electrode 18.
第２図には下部ワイヤガイド２２の断面が示さ
れ、図においてダイスホルダ３０にはダイス３２
が収納され、該ダイス３２はダイスホルダ３０の
下部に設けられたダイス押え３４にて固定されて
いる。そして、ワイヤ電極１８は各ワイヤガイド
２０，２２のダイス３２に形成されたダイヤモン
ドダイス部３６によりガイドされ、その供給方向
が定められる。 FIG. 2 shows a cross section of the lower wire guide 22, and in the figure, the die holder 30 has a die 32
is stored, and the die 32 is fixed by a die holder 34 provided at the bottom of the die holder 30. The wire electrode 18 is guided by a diamond die portion 36 formed in the die 32 of each wire guide 20, 22, and its feeding direction is determined.
そして、被加工物１６とワイヤ電極１８との間
に形成される間隙３８には、加工液供給装置４０
により冷却用加工液（以下「加工液」という）４
２が供給されるが、この加工液４２は前記間隙３
８で放電した際に発生する熱エネルギの冷却を行
い、また加工中に発生する加工屑の排除を行う役
割を有している。上記加工液供給装置４０はダイ
スホルダ３０に形成された加工液供給路４４を有
し、更にダイスホルダ３０の周りには、間隙３８
に加工液４２を噴出させるためのノズル４６が設
けられている。また、ダイス押え３４にはノズル
４６内の加工液４２の一部を排出する加工液排出
路４８が形成されている。そして、加工液供給装
置４０は供給ポンプ（図示せず）を有し、該供給
ポンプにて供給された加工液４２は加工液供給路
４４を通つてノズル４６から間隙３８に噴出され
るとともに、ノズル４６内の加工液４２の一部は
加工液排出路４８及びダイヤモンドダイス部３６
を通つて排出される。 A machining fluid supply device 40 is provided in the gap 38 formed between the workpiece 16 and the wire electrode 18.
Cooling machining fluid (hereinafter referred to as "machining fluid") 4
2 is supplied, and this machining fluid 42 is supplied to the gap 3.
It has the role of cooling the thermal energy generated when electric discharge occurs in step 8, and also removing machining debris generated during machining. The machining fluid supply device 40 has a machining fluid supply path 44 formed in the die holder 30, and further has a gap 38 around the die holder 30.
A nozzle 46 for spouting machining fluid 42 is provided at the. Further, a machining fluid discharge path 48 is formed in the die holder 34 to discharge a portion of the machining fluid 42 in the nozzle 46 . The machining fluid supply device 40 has a supply pump (not shown), and the machining fluid 42 supplied by the supply pump passes through the machining fluid supply path 44 and is ejected from the nozzle 46 into the gap 38. A portion of the machining fluid 42 in the nozzle 46 is transferred to the machining fluid discharge path 48 and the diamond die portion 36.
is discharged through.
そして、放電加工中には被加工物１６及びワイ
ヤ電極１８の材質が混合した数μｍ〜数十μｍの
微粒子状の加工屑が発生し、これが放電の妨げと
なつたり、短絡事故などの原因となつたりする。
通常、加工屑はノズル４６から噴出される加工液
４２により取除かれ、間隙３８に供給された後の
加工液４２には加工屑が含まれている。一般に、
加工液４２は繰返し使用されるので、加工屑を含
む加工液４２を再び間隙３８に供給したのでは、
加工液４２の機能を充分に発揮することができな
い。このため、放電加工機には加工液過装置５
０が設けられ、前記間隙３８に供給された後の加
工屑を含む加工液４２はこの加工液過装置５０
により過され、加工液供給装置４０に返還され
る。すなわち、第１図で示されるようにXYテー
ブル１０の下方には加工液受け５２が設置され、
間隙３８に供給された後の加工屑を含む加工液４
２は加工液受け５２の下部に設けられた排液パイ
プ５４を通つて、第３図で示される加工液槽５６
内に排出される。加工液槽５６の上部には加工液
過装置５０が設置され、該過装置５０には一
端が加工液槽５６内の加工液４２に浸漬する吸入
パイプ５８が取付けられ、更に加工屑を含まない
加工液４２の加工液供給路４４に供給するための
供給パイプ６０が取付けられている。従つて、加
工液槽５６内の加工屑を含む加工液４２は加工液
過装置５０により過され、加工屑の含まない
加工液４２が加工液供給装置４０に返還されるこ
ととなる。 During electrical discharge machining, fine particles of several micrometers to several tens of micrometers are generated, which is a mixture of the materials of the workpiece 16 and the wire electrode 18, and this may impede electrical discharge or cause short-circuit accidents. I feel relaxed.
Normally, the machining debris is removed by the machining fluid 42 jetted from the nozzle 46, and the machining fluid 42 after being supplied to the gap 38 contains the machining debris. in general,
Since the machining fluid 42 is used repeatedly, it is difficult to supply the machining fluid 42 containing machining waste to the gap 38 again.
The function of the machining fluid 42 cannot be fully demonstrated. For this reason, the electric discharge machine has a machining fluid filtration device 5.
0 is provided, and the machining fluid 42 containing machining waste after being supplied to the gap 38 passes through this machining fluid filtration device 50.
The liquid is passed through and returned to the machining fluid supply device 40. That is, as shown in FIG. 1, a machining fluid receiver 52 is installed below the XY table 10.
Machining liquid 4 containing machining waste after being supplied to the gap 38
2 passes through a drain pipe 54 provided at the bottom of the machining fluid receiver 52 to a machining fluid tank 56 shown in FIG.
discharged inside. A machining fluid filtration device 50 is installed above the machining fluid tank 56, and a suction pipe 58 is attached to the filtration device 50, one end of which is immersed in the machining fluid 42 in the machining fluid tank 56, and further contains no machining waste. A supply pipe 60 for supplying the machining fluid 42 to the machining fluid supply path 44 is attached. Therefore, the machining fluid 42 containing machining debris in the machining fluid tank 56 is passed through the machining fluid filtration device 50, and the machining fluid 42 not containing machining debris is returned to the machining fluid supply device 40.
しかしながら、従来のワイヤカツト放電加工機
においては、ワイヤ電極断線時、加工一時停止、
加工終了時などの加工停止時において、加工電源
とともに加工液供給装置４０及び加工液過装置
５０が直ちに停止されていたので、次のような問
題があつた。すなわち、加工停止時において加工
液４２の供給が直ちに停止されると、被加工物１
６は室温の影響を受けて上昇し、その寸法が変動
する。この結果、加工再開時においてワイヤ電極
１８による加工位置にずれが生じ、加工精度が悪
くなるという欠点があつた。 However, in conventional wire-cut electrical discharge machines, when the wire electrode is disconnected, machining is temporarily stopped,
When machining is stopped, such as at the end of machining, the machining fluid supply device 40 and machining fluid filtration device 50 are immediately stopped together with the machining power supply, which causes the following problem. That is, if the supply of machining fluid 42 is immediately stopped when machining is stopped, the workpiece 1
6 rises under the influence of room temperature, and its dimensions change. As a result, when machining is restarted, the machining position by the wire electrode 18 shifts, resulting in a disadvantage that machining accuracy deteriorates.
発明の目的
本発明は上述した従来の課題に鑑みなされたも
のであり、その目的は、加工停止に伴い被加工物
が室温の影響を受けることなく高精度加工を行う
ことができるワイヤカツト放電加工機を提供する
ことにある。Purpose of the Invention The present invention has been made in view of the above-mentioned conventional problems, and its purpose is to provide a wire-cut electric discharge machine that can perform high-precision machining without the workpiece being affected by room temperature when machining is stopped. Our goal is to provide the following.
発明の構成
上記目的を達成するために本発明は、ワイヤ電
極と被加工物との間に形成される間隙に加工液を
供給しながら該間隙で放電を発生させて被加工物
の加工を行うワイヤカツト放電加工方法におい
て、前記間〓に冷却用加工液を供給するための加
工液供給装置を駆動制御する制御装置によつて放
電加工中においては継続的な冷却用加工液供給を
行い、放電加工停止中においては断続的に冷却用
加工液の供給を行うことを特徴とする。Structure of the Invention In order to achieve the above object, the present invention processes a workpiece by supplying machining liquid to the gap formed between a wire electrode and the workpiece and generating electric discharge in the gap. In the wire cut electric discharge machining method, a control device that drives and controls a machining fluid supply device for supplying cooling machining fluid during electrical discharge machining continuously supplies cooling fluid during electrical discharge machining. A feature is that the cooling processing fluid is intermittently supplied while the machine is stopped.
実施例
以下図面に基づいて本発明の好適な実施例を説
明する。Embodiments Hereinafter, preferred embodiments of the present invention will be described based on the drawings.
本実施例のワイヤカツト放電加工機において、
第１図〜第３図で示される従来のワイヤカツト放
電加工機と同一部材には同一符号を付して説明を
省略する。 In the wire cut electric discharge machine of this embodiment,
Components that are the same as those of the conventional wire-cut electric discharge machine shown in FIGS. 1 to 3 are designated by the same reference numerals, and their explanations will be omitted.
本実施例において特徴的なことは、加工液供給
装置４０及び加工液過装置５０の駆動を制御す
る制御装置（図示せず）備え、加工中においては
加工液を継続して供給し、加工停止時から加工再
開時までの間においては、加工液４２を前記間隙
３８に断続的に供給し、該加工液４２により加工
停止状態の被加工物１６を予備冷却することであ
る。すなわち、制御装置は加工停止状態を検出
し、加工停止時から加工再開時までの間、加工液
供給装置４０及び加工液過装置５０に断続的に
駆動指令を行う。この断続的な駆動指令の時間間
隔は、加工液４２の冷却作用により被加工物１６
に温度変化がほとんど生じない間隔に設定されて
いる。従つて、前記間隙３８に加工液４２が断続
的に供給されるので、加工停止時における被加工
物１６の温度は、加工液４２の温度とほぼ同一と
なり、この結果、加工再開時の被加工物１６の寸
法が加工停止前の寸法と同一となり、高精度加工
を行うことができる。 A characteristic feature of this embodiment is that it is equipped with a control device (not shown) that controls the driving of the machining fluid supply device 40 and the machining fluid filtration device 50, so that machining fluid is continuously supplied during machining, and machining is stopped. During the period from when the machining is restarted, the machining fluid 42 is intermittently supplied to the gap 38, and the workpiece 16, which is in a stopped machining state, is pre-cooled by the machining fluid 42. That is, the control device detects the machining stop state and intermittently issues drive commands to the machining fluid supply device 40 and the machining fluid supply device 50 from the time the machining is stopped to the time the machining is restarted. The time interval between these intermittent drive commands is determined by the cooling effect of the machining fluid 42 on the workpiece 16.
The interval is set so that there is almost no temperature change. Therefore, since the machining fluid 42 is intermittently supplied to the gap 38, the temperature of the workpiece 16 when machining is stopped is almost the same as the temperature of the machining fluid 42, and as a result, the temperature of the workpiece 16 when machining is restarted is The dimensions of the object 16 become the same as the dimensions before the processing was stopped, and high precision processing can be performed.
発明の効果
以上説明したように本発明によれば、加工停止
時から加工再開時までの間、冷却用加工液を間隙
に断続的に供給することによつて、該冷却用加工
液により加工停止状態の被加工物を予備冷却しな
がら放電加工を行うことができる。従つて、加工
停止に伴い被加工物の寸法が室温の影響を受けて
変動することがなく、高精度加工を行うことがで
きる。Effects of the Invention As explained above, according to the present invention, by intermittently supplying the cooling machining fluid to the gap between the time of stopping machining and the time of restarting machining, the machining is stopped by the cooling machining fluid. Electrical discharge machining can be performed while pre-cooling the workpiece. Therefore, the dimensions of the workpiece do not change due to the influence of room temperature when processing is stopped, and high-precision processing can be performed.
第１図は従来のワイヤカツト放電加工機の一例
を示す構成図、第２図は第１図で示される下部ワ
イヤガイドの構成を示す要部断面図、第３図は加
工液過装置の設置状態を示す外観図である。
各図中同一部材には同一符号を付して、１６は
被加工物、１８はワイヤ電極、２０は上部ワイヤ
ガイド、２２は下部ワイヤガイド、３２はダイ
ス、３６はダイヤモンドダイス部、３８は間隙、
４０は加工液供給装置、４２は冷却用加工液、５
０は加工液過装置である。
Fig. 1 is a configuration diagram showing an example of a conventional wire-cut electric discharge machine, Fig. 2 is a cross-sectional view of main parts showing the structure of the lower wire guide shown in Fig. 1, and Fig. 3 is an installation state of the machining liquid drainage device. FIG. The same members in each figure are given the same reference numerals, 16 is the workpiece, 18 is the wire electrode, 20 is the upper wire guide, 22 is the lower wire guide, 32 is the die, 36 is the diamond die part, and 38 is the gap. ,
40 is a machining fluid supply device, 42 is a cooling machining fluid, 5
0 is a processing liquid filtration device.
Claims (1)
〓に加工液を供給しながら該間〓で放電を発生さ
せて被加工物の加工を行うワイヤカツト放電加工
方法において、前記間〓に冷却用加工液を供給す
るための加工液供給装置を駆動制御する制御装置
によつて放電加工中においては継続的な冷却用加
工液供給を行い、放電加工停止中においては断続
的に冷却用加工液の供給を行うことを特徴とする
ワイヤカツト放電加工方法。1 In a wire cut electric discharge machining method in which the workpiece is machined by supplying machining fluid to the gap formed between the wire electrode and the workpiece and generating electric discharge in the gap, cooling is performed during the gap formed between the wire electrode and the workpiece. The control device that drives and controls the machining fluid supply device for supplying the machining fluid for cooling continuously supplies the machining fluid for cooling during electrical discharge machining, and supplies the machining fluid for cooling intermittently while electrical discharge machining is stopped. A wire cut electrical discharge machining method characterized by supplying.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP20312282A JPS5993240A (en) | 1982-11-19 | 1982-11-19 | Wire cut electric discharge machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP20312282A JPS5993240A (en) | 1982-11-19 | 1982-11-19 | Wire cut electric discharge machine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5993240A JPS5993240A (en) | 1984-05-29 |
| JPS6254608B2 true JPS6254608B2 (en) | 1987-11-16 |
Family
ID=16468762
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP20312282A Granted JPS5993240A (en) | 1982-11-19 | 1982-11-19 | Wire cut electric discharge machine |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5993240A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH03103011U (en) * | 1990-02-13 | 1991-10-25 | ||
| JPH03114110U (en) * | 1990-03-07 | 1991-11-22 | ||
| JPH03119309U (en) * | 1990-03-19 | 1991-12-09 | ||
| JPH03119310U (en) * | 1990-03-15 | 1991-12-09 |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6094222A (en) * | 1983-10-27 | 1985-05-27 | Fanuc Ltd | Wire electrode cooling device in wire cut electric discharge machine |
| JPS6156827A (en) * | 1984-08-27 | 1986-03-22 | Fanuc Ltd | Power supply pin cooling system for wire-cut electric discharge machine |
-
1982
- 1982-11-19 JP JP20312282A patent/JPS5993240A/en active Granted
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH03103011U (en) * | 1990-02-13 | 1991-10-25 | ||
| JPH03114110U (en) * | 1990-03-07 | 1991-11-22 | ||
| JPH03119310U (en) * | 1990-03-15 | 1991-12-09 | ||
| JPH03119309U (en) * | 1990-03-19 | 1991-12-09 |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5993240A (en) | 1984-05-29 |
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